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Is it a neck warmer? A bandana? A cap? The Castelli Pro Thermal Headthingy is, in fact, capable of being all those things. A versatile cycling accessory for your cold-weather training.
The Pro Thermal Headthingy is made from soft, warm and stretchy Thermoflex fabric, keeping in body heat while still allowing your skin to breathe. It’s light in weight too so won’t feel it’s in the way and should you want to stash it away it rolls up easily to pop in a jersey pocket.